Conversion method for transaction KKPAN

Hi,

Is anyone aware of a conversion method, BAPI or LSMW etc for uploading data to transaction KKPAN - Create Cost Est. w/o Qty Structure.

We want to avoid BDC method since it is not efficient (moreover lot of table control etc are present) & best practice.

Any help would be appreciated.

Thanks & Regards,

Savitha